<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>html表单</title>
</head>
<body>
<form>
    <label for="username">用户名</label>
    <input type="text" id="username" placeholder="请输入字母">
    <br><br>
    <label for="pass">密码 </label>
    <input type="text" placeholder="请输入密码" id="pass">
    <br><br>
    <label>请选择性别</label>
    <input type="radio" name="gender" id="choice">男
    <input type="radio" name="gender" id="choice">女

</form>

    
</body>
</html>